DISC BRAKE SERVICEReview parts & operation of disc brakesComplete brake inspectionBrake job disc brakesMachine rotorsPack wheel bearings

Review of BasicsIn terms of energy what do brakes do?Convert mechanical energy to heat energy.Why are disc brakes better than drum brakes?Disc brakes dissipate heat more efficiently.Which does more braking? A braked turning wheel or a braked locked-up wheel?Braking only occurs when the wheel are turning,

Disc Brake PartsRotorCaliperBrake padsPistonSquare cut sealDust bootGuide pinsMounting bracket

Inspecting Disc BrakesRoad test and function checksShop testsDisc brake pad thicknessInspection of rotor. (Miking)

Road TestPulsationBrake PullBrake Lock-upSpongy PedalDragFade

ScrapingSquealGrindingClunkVibration

Shop InspectionCaliper, Pads, Rotor & HardwareInspect brake hose for cracks.Inspect the brake pads for there thickness. The pad material should be at least as thick as the backing plate.Look for any damage to the mis. hardware.Mike the rotor.

Micrometer

Disc Brake ServiceDisassembly and Removal of CaliperC-ClampInspection of HardwareReplacing PadsDisc Brake QuietReassembly

Machining RotorsA limited amount of metal can removed from the rotor because of heat dissipation. Thickness of rotor new.Machine to thickness.Discard thickness.

Machining RotorsMeasuring rotor thicknessMounting on latheScratch cutCoarse Cut(s) .006Fine Cut .004Cleaning hub

Removing the Rotor

Mounting on the Lathe

Cleaning Wheel Bearings

Installing New Oil Seal

Installing the Rotor